Leigh Vosseller - Aug 28, 2023 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Role: EVP & CHIEF FINANCIAL OFFICER
Signature: /s/ Rachel Malina, Attorney-in-Fact for Leigh A. Vosseller
Stock symbol: TNDM
Transactions as of: Aug 28, 2023
Transactions value $: -$3,815
Form type: 4
Date filed: 8/30/2023, 04:19 PM
Previous filing: Aug 17, 2023
Next filing: Nov 13, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TNDM	Common Stock	Options Exercise	$0	+407	+3.59%	$0.00	11.8K	Aug 28, 2023	Direct
transaction	TNDM	Common Stock	Tax liability	-$3.82K	-141	-1.2%	$27.06	11.6K	Aug 28, 2023	Direct	F1
holding	TNDM	Common Stock						5.66K	Aug 28, 2023	Leigh A. Vosseller Trust	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TNDM	Restricted Stock Unit	Options Exercise	$0	-407	-25.03%	$0.00	1.22K	Aug 28, 2023	Common Stock	407		Direct	F3, F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.
F2	The securities are held by the Leigh A. Vosseller Trust dated January 17, 2010, of which Leigh Vosseller is the Trustee.
F3	Awarded on May 27, 2020 pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the 2013 Plan).
F4	Each RSU represents a contingent right to receive either one share of common stock of the Issuer or cash in lieu thereof, at the Issuer's discretion, in accordance with the terms of the 2013 Plan.
F5	RSU vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on 5/27/2021, and the remaining shares shall vest in twelve (12) equal quarterly installments thereafter.